Sensor Model Sensor Data Sensor Platform Transducer Value

Copyright © 2014 Open Geospatial Consortium 22

4.29. Result

An estimate of the value of some property generated by a known procedure [OM]

4.30. Sample

A representative subset of the physical entity on which an observation is made.

4.31. Sensor

An entity capable of observing a phenomenon and returning an observed value. Type of observation procedure that provides the estimated value of an observed property at its output. Note: A sensor uses a combination of physical, chemical or biological means in order to estimate the underlying observed property. At the end of the measuring chain electronic devices often produce signals to be processed.

4.32. Sensor Model

In line with traditional definitions of the remote sensing community, a sensor model is a type of Location Model that allows one to georegister or co-register observations from a sensor particularly remote sensors.

4.33. Sensor Data

List of digital values produced by a sensor that represents estimated values of one or more observed properties of one or more features. Note: Sensor data is usually available in the form of data streams or computer files. 4.34. Sensor-Related Data List of digital values produced by a sensor that contains ancillary information that is not directly related to the value of observed properties Example: sensor status, quality of measure, quality of service, battery life, etc. Such data can be sent in the same data stream with measured values and when measured is sometimes indistinguishable from sensor data.

4.35. Sensor Platform

An entity to which can be attached sensors or other platforms. A platform has an associated local coordinate reference frame that can be referenced relative to an external coordinate reference frame and to which the reference frames of attached sensors and platforms can be referenced.

4.36. Transducer

An entity that receives a signal as input and generates a modified signal as output. Includes detectors, actuators, and filters.

4.37. Value

A member of the value-space of a datatype. A value may use one of a variety of scales including nominal, ordinal, ratio and interval, spatial and temporal. Primitive datatypes may be combined to form aggregate datatypes with aggregate values, including vectors, tensors and images [ISO11404] . SensorML OGC 12-000 Copyright © 2014 Open Geospatial Consortium 23 5 Conventions 5.1 Abbreviated terms In this document the following abbreviations and acronyms are used or introduced: CRS Coordinate Reference System DN Digital Number ECEF Earth-Centered Earth-Fixed ECI Earth Centered Inertial GPS Global Positioning System ISO International Organization for Standardization MISB Motion Imagery Standards Board OGC Open Geospatial Consortium SAS Sensor Alert Service SensorML Sensor Model Language SI Système International International System of Units SOS Sensor Observation Service SPS Sensor Planning Service SWE Sensor Web Enablement TAI Temps Atomique International International Atomic Time uom Units of measure UCUM Unified Code for Units of Measure UML Unified Modeling Language UTC Coordinated Universal Time XML eXtended Markup Language 1D One Dimensional 2D Two Dimensional 3D Three Dimensional

5.2 UML notation The diagrams that appear in this standard are presented using the Unified Modeling